The effect of replacing fish meal with plant and animal composition on growth indices, hematology and hepatic enzymes of Huso huso

Abstract

Introduction: To purpose of this study was fish meal reduction in Huso huso diet.
Materials & Methods: In this study, a combination of plant and animal proteins (corn gluten: 35%, wheat gluten: 19.34%, processed soy meal: 3%, poultry by product: 20%, meat and bone meal: 8%, blood meal: 4.3%) similar in chemical composition and amino acid profile was subsisted Anchovy fish meal at 0, 20, 40, 60 and 80% and named of treatment 1 (FM), treatment 2 (MPP20), treatment 3 (MPP40), Treatment 4 (MPP60) and treatment 5 (MPP80). All diets had the same protein and energy levels (44% and 4365 kcal/kg). Huso huso (average weight, 167±6.5 gr) were fed saturated and growth indices, hematology and enzyme liver were studied.
Results: The results showed that growth indices were not affected by different diets (P>0.05). There was no significant difference in white blood cell count, red blood cell, hemoglobin, hematocrit, mean hemoglobin concentration (MCHC), monocyte and eosinophil in fish compared to fish fed on fish meal (FM) diet (P>0.05), but mean erythrocyte volume (MCV) in diets fed with diets (MPP20, MPP40, MPP60 and MPP80) and mean hemoglobin weight in one erythrocyte (MCH) of MPP60 and MPP80 compared to (FM) were significantly Decreased (P<0.05). Increasing mixture of animal protein instead of fish meal significantly increased the activity of liver AST and ALT enzymes compared to fish fed a diet based on fish meal (P<0.05).
Conclusion: The results of this experiment showed that there was possibility of replace 40% fish meal by mixture of animal and plant proteins without adversely effect on hematological parameters and liver enzyme in growing Huso huso.